An apparatus for purifying 1,3 propane sultone

Abstract

The utility model discloses a kind of equipment for purifying 1,3 propane sulfonic acid lactone, including body, raw material feeding pipe and gas feeding pipe are provided on the body, scraper is provided on the inner side wall of the body, gas distributor is provided outside the gas feeding pipe, the raw material feeding pipe outside is provided with cloth distribution disc.The utility model can reduce free acid and moisture of 1,3-propane sulfonic acid lactone by air cooling technology, solve the acid value problem of 1,3-propane sulfonic acid lactone.

Description

Technical Field

[0001] This utility model relates to the field of purification equipment technology, specifically to an equipment for purifying 1,3-propanesulfonate lactone. Background Technology

[0002] 1,3-Propanesulfonate lactone (PS), also known as 1,3-propanesulfonate lactone, is an important organic synthesis intermediate. Due to its chemical structure, it exhibits strong reactivity with organic compounds such as alcohols, phenols, thiols, and amines. 1,3-Propanesulfonate lactone is a white crystalline solid at room temperature with a melting point of 30-33°C. It is widely used in surface treatment, electronic plating, photosensitive materials, leather tanning, inks, pharmaceuticals, and lithium-ion batteries.

[0003] Pharmaceutical-grade 1,3-propanesulfonate lactones used in the pharmaceutical industry have stringent requirements: a content ≥99.5%, moisture ≤1000ppm, and acid value ≤1000ppm. All of these requirements must be met for 1,3-propanesulfonate lactones to qualify as pharmaceutical-grade additives. Among these indicators, acid value is particularly important, as it significantly impacts the quality of lithium-ion battery products. Therefore, to achieve electronic-grade requirements, the acid value issue of 1,3-propanesulfonate lactones must be addressed.

[0004] The traditional method for controlling the acid value of 1,3-propanesulfonic acid lactone is through distillation. Although the acid value of the product after distillation can be controlled at around 500 ppm, the equipment investment is large and the operating cost is high. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a device for purifying 1,3-propanesulfonate lactone. By using air cooling technology, the free acid and moisture of 1,3-propanesulfonate lactone can be reduced, thus solving the acid value problem of 1,3-propanesulfonate lactone.

[0006] To solve the above-mentioned technical problems, this utility model provides a device for purifying 1,3-propanesulfonate lactone, including a main body, on which a raw material feed pipe and a gas feed pipe are provided. A scraper is provided on the inner side wall of the main body, a gas distributor is provided on the outer side of the gas feed pipe, and a material distribution plate is provided on the outer side of the raw material feed pipe.

[0007] Furthermore, the feed temperature of the raw material is set to 29-35℃.

[0008] Furthermore, the device temperature within the body is set to 25-30°C.

[0009] Furthermore, the feeding rate of the raw materials is 10-50 kg / min.

[0010] Furthermore, the rotational speed of the fabric disc is 100-500 rpm.

[0011] Furthermore, the gas used in the gas feed pipe is nitrogen or oxygen, and the temperature is 5-20℃.

[0012] Furthermore, the number of gas distributors is 3-9.

[0013] The beneficial effects of this invention are as follows: When using this device, the 1,3-propanesulfonate lactone product passes through a preheating tube (preheating temperature 29-35℃) to fix the raw material temperature; the centrifuge equipment heats the material to 25-30℃; the 1,3-propanesulfonate lactone enters the equipment through the raw material inlet pipe and is distributed on the distribution tray, which is then opened; simultaneously, the gas valve is opened to allow the gas to contact the liquid evenly; small crystals are formed at the moment of contact, and trace amounts of free acid pass through the centrifuge initially outside the crystals; after the crystals dissolve, the product is qualified.

[0014] Air cooling technology can reduce the free acid and moisture content of 1,3-propanesulfonate lactone, thus solving the acid value problem of 1,3-propanesulfonate lactone. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the gas distributor structure of this utility model.

[0017] The labels in the diagram are as follows: 1. Raw material feed pipe; 2. Fabric tray; 3. Scraper; 4. Gas feed pipe; 5. Gas distributor. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.

[0019] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0021] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0022] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0023] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0024] Reference Figures 1 to 2 As shown, an embodiment of the apparatus for purifying 1,3-propanesulfonate lactone according to the present invention includes a main body, on which a raw material feed pipe 1 and a gas feed pipe 4 are provided. A scraper 3 is provided on the inner side wall of the main body, a gas distributor 5 is provided on the outer side of the gas feed pipe 4, and a material distribution plate 2 is provided on the outer side of the raw material feed pipe 1.

[0025] The parameters for use are as follows: feed temperature 29-35℃ (low temperature will cause premature crystallization, high temperature will prevent crystallization);

[0026] Equipment temperature (25-30℃); low temperature hinders rapid crystallization and results in high free acid content.

[0027] Feed rate: 10-50 kg / min (high speed will prevent effective crystallization and reduce free acid);

[0028] Rotation speed of fabric feeder 2: 100-500 rpm (affects crystal size);

[0029] Gas type: nitrogen or oxygen;

[0030] Gas temperature: 5-20℃;

[0031] Gas pressure: 1-3 kg;

[0032] Number of gas distributors 5: 3-9;

[0033] When in use, the 1,3-propanesulfonate lactone product passes through a preheating tube (preheating temperature 29-35℃) to fix the raw material temperature;

[0034] (2) The centrifuge equipment is heated to 25-30℃.

[0035] (3) 1,3-propanesulfonate lactone enters the equipment through the raw material feed pipe 1 and is distributed on the material distribution plate 2. The material distribution plate 2 is turned on.

[0036] (4) Simultaneously open the gas valve to allow the gas to come into uniform contact with the liquid.

[0037] (5) Upon contact, small crystals are formed, and trace amounts of free acid pass through the outer layer of the crystals during the initial stage of centrifugation.

[0038] (6) The product is qualified after the crystals are dissolved.

[0039] The above-described embodiments are merely preferred embodiments provided to fully illustrate the present invention, and the scope of protection of the present invention is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on the present invention are all within the scope of protection of the present invention. The scope of protection of the present invention is defined by the claims.

Claims

1. An apparatus for purifying 1,3-propanesulfonate lactone, characterized in that, The device includes a main body, on which a raw material feed pipe (1) and a gas feed pipe (4) are provided. A scraper (3) is provided on the inner side wall of the main body. A gas distributor (5) is provided on the outer side of the gas feed pipe (4). A material distribution plate (2) is provided on the outer side of the raw material feed pipe (1).

2. The apparatus for purifying 1,3-propanesulfonate lactone as described in claim 1, characterized in that, The number of gas distributors (5) is 3-9.

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